Resreach In Generating High-strength Microwave Electromagnet Field

Microwave Technology has got great development from the earliest application of microwave technology in the military to the gradual popularization of civil. As a very mature technology, Microwave Technology continues to glow with infinite vitality in the collision with chemistry, medicine, materials science and other disciplines. This topic comes from the interdisciplinary field of microwave technology and materials science. With more and more electronic devices working in high power environment, the nonlinear phenomenon of the media has attracted more and more attention of researchers. For the sake of this reason, this paper aims to provide a experimental environment of microwave strong electric field and strong magnetic field, To obtain higher electric field and magnetic field strength of microwave band in the case of same input power by theoretical numerical calculation and construction of hardware experimental conditions.Author carries on the research from the electromagnetic field numerical calculation part, the experiment hardware realization two aspects. Through the electromagnetic transmission line and the resonant cavity size comparison of two kinds of physical structure can produce, we are choosing the cavity structure as the core of the system. On this basis, four measures are proposed including reducing the narrow side height of the rectangular resonant cavity, selecting appropriate coupling structure to reduce the reflected power and coupling power to load, metal surface processing technology, selecting the special high quality factor resonant mode of resonant cavity. Combining theory and engineering experiments, we can improve the maximum value of the microwave electric field and the magnetic field strength in the resonant cavity. Furthermore two kinds of microwave measurement methods are also put forward including Slotted line test method and Perturbation method, which can be used to verify the electric field and magnetic field strength of the resonant system which developed in this paper. The error sources of the testing methods are analyzed.By the theoretical and experimental research on the construction of the microwave strong electric field and the magnetic field environment, several measures proposed in this paper can effectively improve the electric field and the magnetic field strength of microwave band in the partial region of the cavity under the premise of the solid state excitation source. Besides, the nonlinear phenomenon of dielectric constant of dielectric material was successfully detected by the developed resonant system. Further research on nonlinear phenomenon of dielectric materials can be carried out based on the experimental hardware provided in this paper.